Home / 20,284.60-30,419.52-7,798.20

Finding the Fourth Proportional to 20,284.60, 30,419.52 and 7,798.20

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Solution

The fourth proportional to 20,284.60, 30,419.52 and 7,798.20 is: 11,694.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.60 : 30,419.52 = 7,798.20 : x
  2. Step 2: Convert to fraction form
    20,284.60/30,419.52 = 7,798.20/x
  3. Step 3: Cross multiply
    20,284.60x = 30,419.52 × 7,798.20
  4. Step 4: Simplify right side
    20,284.60x = 237,217,500.86
  5. Step 5: Solve for x
    x = 237,217,500.86/20,284.60
  6. Step 6: Final answer
    x = 11,694.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.